大气科学2012，Vol.36Issue(5)：901-911,11.DOI:10.3878/j.issn.1006-9895.2012.11124
我国东部夏季一次强对流活动过程中对流层上部大气成分变化的分析
Analysis of the Variation of Atmospheric Composition in the Upper Troposphere during a Strong Convection in Eastern China in Summer
摘要
Abstract
The distribution of atmospheric composition, including carbon monoxide (CO), ozone (O3), water vapor (H2O), and ice water content (IWC), during a strong convective weather occurring in the Jianghuai areas is investigated based on measurements by the MLS (Microwave Limb Sounder) on the Aura satellite. Results show that the increase of CO mixing ratio at 200 hPa is 0.12 ppm, the decrease of O3 mixing ratio at 70 hPa is about 0.30 ppm, and the increase of H2O mixing ratio at 250 hPa is 400 ppm. The value of IWC has a sharp growth before the surface heavy rain occurs, and its maximum at 200 hPa is about 0.03 g/m3. The consistency variation between vertical velocity and mixing ratio of CO and O3 indicates that the vertical transport is a conceivable mechanism changing the distribution of atmospheric composition in the upper troposphere and the lower stratosphere. Besides, H2O mixing ratio and IWC also increase obviously when the convection is triggered, but the growth is limited below the tropopause. This suggests that not only the vertical transport but also the microphysical processes in the convection system decide the quality and phase of water in the upper troposphere.关键词
对流/大气成分/微波临边遥感Key words
convection, atmospheric composition, microwave limb sounder分类
天文与地球科学引用本文复制引用
易明建,傅云飞,刘鹏,衡志炜,高越,洪星园..我国东部夏季一次强对流活动过程中对流层上部大气成分变化的分析[J].大气科学,2012,36(5):901-911,11.基金项目
国家重点基础研究发展计划项目2010CB428601,中国科学院知识创新工程重要方向项目KZCX2-YW-Q11-04,国家自然科学基金资助项目41075041、40730950、41105031,中央高校基本科研业务费专项资金资助WK2080000030,中国博士后科学基金面上资助20100470859 （）
